<template>
  <Dialog :title="dialogTitle" v-model="dialogVisible">
    <el-form
      ref="formRef"
      :model="formData"
      :rules="formRules"
      label-width="120px"
      v-loading="formLoading"
    >
      <el-form-item label="目录名称" prop="catalogName">
        <el-input
          :style="{ width: '50%' }"
          v-model="formData.catalogName"
          placeholder="请输入课程目录名称"
        />
      </el-form-item>
      <el-form-item label="课程内容" prop="courseItemIds">
        <el-select
          :style="{ width: '50%' }"
          v-model="formData.courseItemIds"
          multiple
          filterable
          remote
          reserve-keyword
          placeholder="请选择课程内容"
          :remote-method="remoteSelect"
          :loading="loading"
        >
          <el-option
            v-for="item in selectOptions"
            :key="item.id"
            :label="item.itemName"
            :value="item.id"
          />
        </el-select>
      </el-form-item>
    </el-form>
    <template #footer>
      <el-button @click="submitForm" type="primary" :disabled="formLoading">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </template>
  </Dialog>
</template>
<script setup lang="ts">
import * as CourseListApi from '@/mock/course/course-list'
const { t } = useI18n() // 国际化
const message = useMessage() // 消息弹窗
const dialogVisible = ref(false) // 弹窗的是否展示
const dialogTitle = ref('添加课程目录') // 弹窗的标题
const formLoading = ref(false) // 表单的加载中：1）修改时的数据加载；2）提交的按钮禁用
const formData = ref({
  catalogName: null,
  courseItemIds: null
})
const formRules = reactive({
  catalogName: [{ required: true, message: '目录名称不能为空', trigger: 'blur' }],
  courseItemIds: [{ required: true, message: '请选择课程内容', trigger: 'blur' }]
})
const formRef = ref() // 表单 Ref

/** 打开弹窗 */
const open = async (id: number) => {
  dialogVisible.value = true
  resetForm()
}
defineExpose({ open }) // 提供 open 方法，用于打开弹窗

/** 提交表单 */
const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
const submitForm = async () => {
  // 校验表单
  if (!formRef) return
  const valid = await formRef.value.validate()
  if (!valid) return
  // 提交请求
  formLoading.value = true
  try {
    const data = formData.value
    console.log(data)

    message.success(t('提交成功'))
    dialogVisible.value = false
    // 发送操作成功的事件
    emit('success')
  } finally {
    formLoading.value = false
  }
}

/** 重置表单 */
const resetForm = () => {
  formData.value = {
    catalogName: null,
    courseItemIds: null
  }
  formRef.value?.resetFields()
}

/** 远程搜索 */
const selectOptions = ref<CourseItem>([])
const remoteSelect = async (keyword: string) => {
  let res = await CourseListApi.dimselectCourseItem(keyword)
  selectOptions.value = res.data
}
</script>
